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ELECTRICAL SYSTEM
2e. The RMC Module is in the same housing as
the key switch, and is not available sepa-
rately. For the purpose of diagnosis it is
treated separately. Diagnosis of the module
with the key switch introduces too many
over-lapping variables. See Figure 7.3.
RMC Module
Figure 7.3
•
Principle: To diagnose the module, the simplest
approach is to check all of the inputs (safety cir-
cuits) that are connected to it. If the inputs work
properly, but the RMC module does not work
properly (outputs), then the module can be
determined to be faulty. A specific procedure is
covered, following the description of the correct
operation of the RMC module.
•
Working properly: The module cannot be diag-
nosed if it's function is not understood. It is
designed to work as follows: See Figure 7.4.
LED Indicator
Figure 7.4
•
When the RMC module is disarmed, the tractor
will operate as MTD tractors have historically
operated:
If reverse is engaged when the electric PTO is
ON, the PTO clutch will turn off.
If the operator leaves the seat with the engine
running, the engine will turn off.
If the operator leaves the seat with the PTO in
the OFF position, the engine will turn off unless
the brake is applied.
When the RMC module is armed, the tractor will
operate identically to when the module is dis-
armed.
•
When the RMC module is armed and turned
on: The tractor will operate identically to when
the module is disarmed, except that the operator
will be able to put the transmission in reverse
with the PTO engaged and the cutting deck will
continue to run The operator may put the tractor
into and out of reverse as many times as they
wish without having to re-arm or turn on the
module again.
•
To arm the RMC module: the operator must
turn the key switch to the REVERSE CAUTION
MODE (yellow zone), with the parking brake
released.
•
To turn the RMC module ON: The module must
first be armed, then the orange triangular button
is depressed, illuminating the red LED indicator
to indicate that it is ON. It is important that the
operator must take two actions to turn the RMC
module ON so that they do not do so inadvert-
ently.
•
The RMC module will turn OFF and disarm if:
The operator moves the key to any position
other than REVERSE CAUTION MODE.
The operator sets the parking brake.
If the operator leaves the seat without setting the
parking brake, the engine will turn off. The key
movement necessary to re-start the engine will
make it necessary to re-arm and turn on the
RMC module if the operator wishes to continue
with the ability put the tractor in reverse while the
PTO is running.
•
To re-arm and turn the module ON:
If the key is in REVERSE CAUTION MODE
position, it must be turned to another position
(Normal Run), then returned to REVERSE CAU-
TION MODE. Once re-armed, the module can
be turned-on by pressing orange triangular but-
114
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